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-rw-r--r--layout/svg/nsSVGUtils.cpp9
1 files changed, 6 insertions, 3 deletions
diff --git a/layout/svg/nsSVGUtils.cpp b/layout/svg/nsSVGUtils.cpp
index 0bded21ff..98e5f9b5f 100644
--- a/layout/svg/nsSVGUtils.cpp
+++ b/layout/svg/nsSVGUtils.cpp
@@ -734,9 +734,12 @@ nsSVGUtils::PaintFrameWithEffects(nsIFrame *aFrame,
RefPtr<SourceSurface> maskSurface;
if (maskUsage.shouldGenerateMaskLayer) {
- maskSurface =
- maskFrame->GetMaskForMaskedFrame(&aContext, aFrame, aTransform,
- maskUsage.opacity, &maskTransform);
+ // Make sure we have a mask frame.
+ if (maskFrame) {
+ maskSurface =
+ maskFrame->GetMaskForMaskedFrame(&aContext, aFrame, aTransform,
+ maskUsage.opacity, &maskTransform);
+ }
if (!maskSurface) {
// Entire surface is clipped out.